Filter out coverage-related arguments from the original test process arguments#20
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gehrisandro merged 1 commit into4.xfrom Aug 21, 2025
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In Pest v4 mutation testing is broken, if the default PHP binary has no coverage driver. The reason is the different behaviour of PHPUnit 12 when an option like
--coverage-phpavailable.Therefore, we must ensure to remove all coverage related options when running Pest tests on for a given mutation.
In my case, I have a default Laravel Herd installation and execute mutation testing like this:
herd coverage vendor/bin/pest --mutate